Round-off the number?

Question

Round-off the number x=3.4516 to three significant figures and find the absolute and the relative errors.

Answer 1

3.4516 ≈ 3.45

Absolute error = | 3.4516 - 3.45 | = 0.0016

Relative error = 0.0016 / 3.4516 ≈ 0.000464